CN210065176U - Electrocatalysis method nitrogen generator for preventing cathode from being blocked - Google Patents

Abstract

The utility model relates to the technical field of nitrogen generators, in particular to an electro-catalysis nitrogen generator for preventing cathode blockage, which comprises an electro-catalysis pool, a liquid storage cylinder, a circulating pump and a gas-liquid separator, wherein the inner part of the electro-catalysis pool is a negative air chamber and a liquid storage chamber, an asbestos diaphragm is arranged between the negative air chamber and the liquid storage chamber, the gas-liquid separator is connected with the negative air chamber, the liquid storage cylinder is connected with the liquid storage chamber through the circulating pump, one side of the negative air chamber, which is far away from the liquid storage chamber, is provided with a filter air inlet, a gas filtering device is fixed on the filter air inlet, a cathode electrode is fixed inside the negative air chamber, the top end of the negative air chamber, which is positioned at one side of the cathode electrode, is provided with a threaded hole, a screw rod is clamped inside the threaded hole, one end of the screw rod, which is close to the, the working efficiency of the device is improved.

Description

Electrocatalysis method nitrogen generator for preventing cathode from being blocked

Technical Field

The utility model relates to a nitrogen generator technical field especially relates to an electro-catalysis method nitrogen generator who prevents cathode clogging.

Background

The current mainstream method in the nitrogen manufacturing process is to adopt an electrocatalysis method, the electrocatalysis method has the advantages of simple device structure, small volume, low cost, nitrogen purity which can meet the use requirement of common gas chromatography and the like, the negative electrode of the nitrogen generator adopts a gas diffusion electrode which is air-permeable and impermeable to electrolyte, the positive electrode is a porous metal anode, the total reaction is that oxygen in the air is reduced into OH < - > at the negative electrode, while oxygen is separated out by OH-discharge in the electrolyte on the anode, nitrogen and trace inert gas which do not participate in the reaction are discharged from the cathode vent hole, but the cathode blockage phenomenon is easy to occur when the nitrogen generator continuously works for a long time, because the electrolyte is generally aqueous solution of potassium hydroxide or sodium hydroxide, the raw material gas is compressed air, and carbon dioxide contained in the compressed air is easy to generate pasty carbonate crystals to block a gas circuit, so that the continuous normal operation and the working efficiency of the electro-catalysis tank are influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem that the cathode is easy to block when the nitrogen generator works for a long time in the prior art, and providing the electro-catalysis nitrogen generator for preventing the cathode from blocking.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

design an electro-catalysis method nitrogen generator that prevents negative pole jam, including electro-catalysis pond, liquid reserve tank, circulating pump and vapour and liquid separator, the inside negative pole air chamber and liquid reserve tank of being of electro-catalysis pond, the negative pole air chamber with there is the asbestos diaphragm at the interval between the liquid reserve tank, vapour and liquid separator with the negative pole air chamber meets, the liquid reserve tank passes through the circulating pump with the liquid reserve tank meets, the negative pole air chamber is kept away from one side of liquid reserve tank is opened there is the filter air inlet, be fixed with gaseous filter equipment on the filter air inlet, negative pole air chamber inside is fixed with the cathode electrode, the liquid reserve tank inside is fixed with the anode electrode, negative pole air chamber top just is located open threaded hole on one side of the cathode electrode, the inside joint of threaded hole has the screw rod, the one end that the screw rod is close to the threaded hole stretches out the outside of, the rotating motor is connected with an external power supply, and an anti-blocking mechanism is fixed at one end of the screw rod, which is positioned in the negative electrode air chamber.

Preferably, the screw is an insulating ceramic rod, and a sealing gasket is fixed at the joint of the screw and the threaded hole.

Preferably, the gas filtering device comprises a filter cartridge, a sealing cover is fixed on the top of the filter cartridge, a filter element is fixed inside the filter cartridge, alkali asbestos is filled inside the filter element, raw gas inlets are formed in two ends of the filter cartridge, and a one-way valve is fixed between the filter cartridge and the electro-catalysis tank.

Preferably, the anti-blocking mechanism comprises a threaded sleeve, the threaded sleeve is sleeved on the screw rod, and a descaling sleeve is fixed at one end of the threaded sleeve, which is close to the cathode electrode.

Preferably, the descaling sleeve is connected with the cathode electrode in a sliding mode, and the descaling sleeve is matched with the cathode electrode in size.

Preferably, the thread bush, the descaling bush and the sealing gasket are all made of inert materials.

The utility model provides a prevent electro-catalysis method nitrogen generator of cathode blocking, beneficial effect lies in: can filter carbon dioxide and steam in the feed gas through gas filtration device in step, can reduce the content of carbon dioxide concentration and water in the electro-catalysis pond, improve reaction efficiency to when the cathode electrode takes place to block through preventing blocking the device, the rotating electrical machines work, thereby it makes the scale removal cover along cathode electrode up-and-down motion to drive the screw rod rotation, descales.

Drawings

FIG. 1 is a schematic cross-sectional view of an electro-catalytic nitrogen generator for preventing cathode blockage according to the present invention;

fig. 2 is a schematic structural diagram of a point a in fig. 1.

In the figure: the device comprises an electro-catalysis cell 1, a negative electrode air chamber 2, a liquid storage chamber 3, an asbestos diaphragm 4, a liquid storage barrel 5, a circulating pump 6, a gas-liquid separator 7, a filter cylinder 8, a raw gas inlet 9, a filter element 10, a sealing cover 11, a one-way valve 12, a filter air inlet 13, a cathode electrode 14, a screw rod 15, an anode electrode 16, a rotating motor 17, a sealing gasket 18, a thread bush 19, a descaling bush 20 and a threaded hole 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-2, an electrocatalysis method nitrogen generator for preventing cathode blockage, comprising an electrocatalysis tank 1, a liquid storage cylinder 5, a circulating pump 6 and a gas-liquid separator 7, wherein the inside of the electrocatalysis tank 1 is divided into a negative electrode air chamber 2 and a liquid storage chamber 3, an asbestos diaphragm 4 is arranged between the negative electrode air chamber 2 and the liquid storage chamber 3, the gas-liquid separator 7 is connected with the negative electrode air chamber 2, and the liquid storage cylinder 5 is connected with the liquid storage chamber 3 through the circulating pump 6, the electrocatalysis generator is characterized in that one side of the negative electrode air chamber 2 far away from the liquid storage chamber 3 is provided with a filter air inlet 13, a gas filtering device is fixed on the filter air inlet 13 and comprises a filter cylinder 8, the top of the filter cylinder 8 is fixed with a sealing cover 11, the inside of the filter cylinder 8 is fixed with a filter core 10, the inside of the filter core 10 is filled with alkali, the contents of carbon dioxide and water in the gas entering the electrocatalytic cell 1 can be reduced, the risk of clogging of the cathode electrode 14 is reduced, and the reaction efficiency is improved.

A cathode electrode 14 is fixed in the cathode air chamber 2, an anode electrode 16 is fixed in the liquid storage chamber 3, a threaded hole 21 is formed at the top end of the cathode air chamber 2 and positioned at one side of the cathode electrode 14, a screw rod 15 is clamped in the threaded hole 21, the screw rod 15 is an insulating ceramic rod, and a sealing gasket 18 is fixed at the joint of the screw rod 15 and the threaded hole 21 to prevent the electrolyte from leaking, one end of the screw rod 15 close to the threaded hole 21 extends out of the outer side of the electro-catalytic cell 1 and is fixed with a rotating motor 17, the rotating motor 17 is connected with an external power supply, one end of the screw rod 15 positioned at the negative electrode air chamber 2 is fixed with an anti-blocking mechanism, the anti-blocking mechanism comprises a threaded sleeve 19, the threaded sleeve 19 is sleeved on the screw rod 15, and a descaling sleeve 20 is fixed at one end of the threaded sleeve 19 close to the cathode electrode 14, the descaling sleeve 20 is connected with the cathode electrode 14 in a sliding manner, and the descaling sleeve 20 is matched with the cathode electrode 14 in size.

The utility model discloses, can filter carbon dioxide and steam in the feed gas through gas filtration device in step, can reduce the content of carbon dioxide concentration and water in the electro-catalysis pond 1, improve reaction efficiency to when taking place to block up as cathode electrode 14 through anti-blocking device, the work of rotating electrical machines 17 drives thereby screw rod 15 and rotates and makes descaling sleeve 20 along cathode electrode 14 up-and-down motion, carries out the scale removal operation, and simple structure descaling is efficient.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides an prevent electrocatalysis method nitrogen generator of negative pole jam, includes electrocatalysis pond (1), liquid reserve tank (5), circulating pump (6) and vapour and liquid separator (7), inside negative pole air chamber (2) and the liquid reserve chamber (3) of being divided into of electrocatalysis pond (1), negative pole air chamber (2) with the interval has asbestos diaphragm (4) between liquid reserve chamber (3), vapour and liquid separator (7) with negative pole air chamber (2) meet, liquid reserve tank (5) pass through circulating pump (6) with liquid reserve chamber (3) meet, its characterized in that, filter air inlet (13) are opened to one side that liquid reserve chamber (3) were kept away from in negative pole air chamber (2), be fixed with gaseous filter equipment on filter air inlet (13), negative pole air chamber (2) inside is fixed with cathode electrode (14), liquid reserve chamber (3) inside is fixed with anode electrode (16), the cathode air chamber (2) top just is located open threaded hole (21) in cathode electrode (14) one side, threaded hole (21) inside joint has screw rod (15), screw rod (15) are close to the one end of threaded hole (21) is stretched out the outside of electro-catalysis pond (1) and is fixed with rotating electrical machines (17), external power source is connected in rotating electrical machines (17), screw rod (15) are located the one end of cathode air chamber (2) is fixed with prevents blocking the mechanism.

2. The generator of claim 1, wherein said screw (15) is an insulating ceramic rod, and a sealing gasket (18) is fixed to the junction of said screw (15) and said threaded hole (21), said sealing gasket (18) being made of an inert material.

3. The nitrogen generator of claim 1, wherein the gas filtering device comprises a filter cartridge (8), a sealing cover (11) is fixed on the top of the filter cartridge (8), a filter core (10) is fixed inside the filter cartridge (8), alkali asbestos is filled inside the filter core (10), a raw gas inlet (9) is formed at each end of the filter cartridge (8), and a one-way valve (12) is fixed between the filter cartridge (8) and the electrocatalysis cell (1).

4. An electrocatalytic nitrogen generator as set forth in claim 1, wherein said anti-clogging means comprises a threaded sleeve (19), said threaded sleeve (19) being sleeved on said threaded rod (15), and a descaling sleeve (20) being fixed to the end of said threaded sleeve (19) close to said cathode electrode (14).

5. An electrocatalytic nitrogen generator as set forth in claim 4 wherein said descaling jacket (20) is slidably connected to said cathode electrode (14) and said descaling jacket (20) is sized to match said cathode electrode (14).

6. An electrocatalytic nitrogen generator as set forth in claim 4, wherein said threaded sleeve (19) and said descaling sleeve (20) are made of inert material.

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